Cov txheej txheem molding ntawm PVC yas kav pib nrog raw cov ntaub ntawv ntawm PVC yas granules. Cov ntaub ntawv raw ntawm PVC yas granules muab faib ua mos PVC thiab nruj PVC raws li tus nqi ntawm cov stabilizers ntxiv, plasticizers, lubricants, thiab lwm yam. Raws li kev tsim cov mos PVC los yog tawv PVC ua raw khoom, PVC yas kav muab faib ua ob. hom: cov kav dej mos thiab tawv: cov kav dej PVC yas yog PVC cov khoom sib xyaw nrog cov stabilizers, lubricants, plasticizers thiab lwm yam additives. Nws yog tsim los ntawm extrusion molding tom qab granulation; cov mos PVC yas yeeb nkab yog tsim los ntawm kev ntxiv ntau yam additives xws li plasticizers nrog cov khoom siab dua rau PVC resin, thiab tom qab ntawd extruding thiab molding tom qab granulation. Qhov sib txawv loj tshaj plaws ntawm ob lub kav dej yog qhov nruj PVC yas yeeb nkab muaj cov tshuaj tiv thaiv zoo dua, corrosion kuj thiab rwb thaiv tsev; cov mos PVC yas yeeb nkab muaj tshuaj lom neeg ruaj khov, hluav taws xob rwb thaiv tsev thiab zoo softness.
